Component Readings/Testing

!WARNING

To avoid risk of electrical shock, personal injury, or death, disconnect power to dishwasher before servicing, unless testing requires power.

Manual Function Test

A Manual Function Test may be started by pressing the Normal Wash key 5 times followed by the Start key within 6 seconds.

The Normal Wash LED will Flash 3 times indicating manual test mode is active. Specific keypads will turn on or off a component as follows:

Heavy Wash	Wash Motor
Normal Wash	Drain Motor
Light Wash	Water Valve
Rinse Only	Soap Dispenser (cycle once)
Sanitize	Rinse Aid (cycle twice)
Sanitize	Vent
Heated Dry	Heating Element

When a component is activated by pressing a specific keypad, the LED above the keypad will be On. The test will cancel 120 seconds after the last keypad is pressed. The display (if available) will show ‘99’ until the remaining timeout period is less than 99 seconds. At this point it will countdown until the mode times out, is cancelled, or another key is pressed. To cancel test, press the Start / Cancel keypad.

Sales Floor Demo Mode

Press Extra Rinse keypad 5 times within 6 seconds. The LEDs will illuminate in a progressive order until all are lit. All LED’s will stay on for 1 second then all go off simultaneously. The display (if available) will begin at ‘50’ and sequence down to ‘0’ at a 1 second interval and repeat until this mode is terminated. This mode will repeat.

To cancel, press the Start / Cancel keypad.

Diagnostic Tips

To check control LEDs, enter Sales Floor Demo Mode. If control fails to perform as described, replace control. To check control and components, enter Field Service Test. If control fails to perform sequence as described, and a fault is detected, determine failure as described in the Field Service Test. If a load component failure has been diagnosed, proceed to the Manual Function Test. To check individual load components for proper operation, enter Manual Function Test. Follow test procedure as described. Repair or replace component as needed.

Note: The High Current or Low Current Motor Error may be detected during a wash cycle selected by a consumer. If this happens, the control will go into a 30 second auto restart mode and shut down if the unit is not able to restart the motor.

Membrane Readings

(Front Only Controls)

	Connector	Measure Between
Heavy Wash	J1	Pin 9	-	Pin 5
Normal Wash	J1	Pin 9	-	Pin 6
Light Wash	J1	Pin 9	-	Pin 7
Rinse Only	J1	Pin 9	-	Pin 8
Auto Clean	J1	Pin 10 - Pin 5
Start / Cancel	J1	Pin 10 -		Pin 6
Delay	J1	Pin 10 -		Pin 7
Heated Dry	J1	Pin 11 - Pin 5
Sanitize	J1	Pin 11 - Pin 6
Tough Scrub	J1	Pin 11 - Pin 7
Tough Scrub Plus	J1	Pin 10 - Pin 8
Extra Rinse	J1	Pin 11 - Pin 8
Model ID Jumper *	J1	Pin 12 - Pin 7

An unpressed switch will read as an open circuit. A pressed switch will read as 10 k ohms.

* On select models

Field Service Test

A Field Service Test may be started by pressing the Heavy Wash key 5 times followed by the Start key within 6 seconds. This test must be performed with clean water to insure proper sensor performance.

“88” will appear in the display (if available*) and the following sequence of events will occur:

SECONDS	FUNCTIONS / ACTIVE LOADS
106	Vent Wax Motor/Water Valve
5	Thermistor check/Turbidity Sensor check &
	calibration - no loads active.
120	Wash Motor/Vent Wax Motor/Dispenser Wax Motor
180	Wash Motor/Heater/Vent Wax Motor
120	Drain Pump
4	Water Valve

Time frame for Thermistor/Turbidity Sensor check & calibration may vary slightly.

The Field Service Test will not repeat. The Heavy Wash LED will Flash during the test mode. Indicator lights (except Heavy Wash and the Display) will illuminate per Sales Floor Demo Mode. If the dishwasher door is opened during the test, the test sequence will pause, and resume when the door is closed. To the cancel test, press the Start / Cancel keypad.

The control has been designed to test the Sensor Memory and Motor. During the Field Service Test, if a fault has been detected, the test will abort any time after the motor current has been checked and 2 or more LED's will begin to Flash. A Memory / Software Check will occur immediately after the test is

started. The (See Note**) LED and one of the following:

Turbidity Sensor - failure - Rinse Only LED

Thermistor - failure - Heavy Wash LED

Motor - high current - Normal Wash LED

Motor - low current - Light Wash LED

Memory Failure - Heated Dry LED

*On select models

**On units with Front Controls only, this will be the Clean LED, on units with Top & Front Controls, this will be the Delay LED

Membrane Readings

(Front & Top Controls)

	Connector	Measure Between
Auto Clean	J1	Pin 10 -		Pin 5
Heavy Wash	J1	Pin 9 -		Pin 5
Normal Wash	J1	Pin 9 -		Pin 6
Light Wash	J1	Pin 9	-	Pin 7
Rinse Only	J1	Pin 9	-	Pin 8
Quick Wash	J1	Pin 10 - Pin 6
Heated Dry	J1	Pin 11 - Pin 5
Sanitize	J1	Pin 11	- Pin 6
Extra Rinse	J1	Pin 11 - Pin 8
Tough Scrub Plus	J1	Pin 10 - Pin 7
160° Wash	J1	Pin 10 - Pin 8
Model ID Jumper *	J1	Pin 12 - Pin 8
Start / Cancel	J3	Pin 9	-	Pin 5
Delay	J3	Pin 9	-	Pin 6

An unpressed switch will read as an open circuit. A pressed switch will read as 10 k ohms.

* On select models

Load Readings

Heater¹	Measure between:		Result
Heater¹	ST1 (Heater) - ST11 (Dlb Neutral)		16 ohms
Wash Motor	ST5 (Motor Common) - ST8 (Motor Main) 3 to 4 ohms
Drain Motor	ST6 (Drain) - ST4 (Dlb Line)		25 ohms
Vent Wax Motor	J6 Pin 1	(Vent) - ST4 (Dlb Line)	1.2 k ohms
Dispenser Wax Motor	J6 Pin 3	(Disp) - ST4 (Dlb Line)	2 k ohms
Water Valve²	J6 Pin 4	(Inlt) - ST4 (Dlb Line)	1.1 k ohms
Thermistor	J5 Pin 1	(Temp) - J5 Pin 4 (Neutral)	See Component Info

Notes:

1.This value assumes the high limit thermostat is closed.

2.This value assumes the float switch is closed.

3.Results are approximate values.

16023063	4	May 2004
		©2004 Maytag Services

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